l5953 STMicroelectronics, l5953 Datasheet - Page 9

• Manufacturer Part Number: l5953
• Description: Multiple Switching Voltage Regulator
• Manufacturer: STMicroelectronics

L5953
Table 5.
Oscillator
Sync
REG1 - 3.3V/5V STBY linear voltage regulator
REG2 - Linear voltage regulator 1.5V to 3.3V
Symbol
V
I
V
ΔV
ΔV
SLAVE
SVR
dropout
SVR
V
V
V
-------- -
ΔV
-------- -
ΔT
V
STBY
V
T
I
Δf
Δf
f
f
lim
h
OH
OL
load
LR
1
2
IH
W
line
IL
j
i
Electrical characteristics (continued) (T
Efficiency
Supply voltage ripple rejection
Switching frequency
Switching frequency
Voltage stability of switching
frequency
Temperature stability of switching
frequency
Low input voltage
High input voltage
Low output voltage
High output voltage
Slave sink current
Output pulse width
Output voltage
Line regulation
Load regulation
V
Current limit
Supply voltage rejection
Linear regulator output voltage
STCAP
- V
STBY
Parameter
f = 260kHz; I
f = 400kHz; I
ΔV
f
V
T
I
no load; ADJ pin = open
no load; ADJ pin = VSTBY pin
no load; 7 < Vdd < 26V
5mA < I
I
I
Out short to GND
ΔV
I
no load; 4.75 ≤ V
1+ (R5/R6) = 2.588
no load; 3.135 ≤ V
1+ (R5/R6) = 1.176
ripple
SOURCE
o
o
o
j
DD
= 100mA, V
= 100mA, V
= 250mA
= -40°C to 85°C
i
DD
= 1Vrms;
= 8 to 18V
= 300Hz; I
= 1Vrms: f = 300Hz
o
=1.5mA
Test condition
< 250mA
amb
o
o
Block diagram and electrical specifications
o
o
= 0.5A
= 0.5A
= 25°C, V
= 5V
= 3.3V
o
IN
= 0.4A
IN
≤ 16V;
≤ 16V;
DD
= 14.4V)
Min.
3.20
1.45
240
375
300
4.9
3.2
2
4
Typ.
0.36
0.47
Tbd
Tbd
260
400
100
300
3.3
3.3
1.5
90
86
50
12
55
5
5
Max.
0.65
1.55
280
425
0.8
0.4
5.1
3.4
0.5
3.4
50
80
Unit
kHz
kHz
mV
mV
mA
dB
μA
dB
ns
%
%
%
%
V
V
V
V
V
V
V
V
9/31